円板双共振子の等価定数

概要

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This paper deals with some double resonance vibrators with the differnt kind of vibration modes or the same ones in a disk, that is; (1) the double resonace modes by combination of differerent two modes of the flexual B_(20) mode(two nodali circlie and no nodali diameter) and the radiali(R, 1-st) mode in a disk, ane (2) the orthogonal double resonance modes of the two flexual B_(ll) modes (one nodal circle and one nodal diameter) or the two counter ((1,1)) modes in a disk.　The equivalent constants in each mode of the disk mentioned above, e.g., the equivalent inductance L_0, the equivalent capacitance C_0 and the capacitance ratio γ are calculated, and the dimensions of piezoelectric materials or electrodes to satisfy next two conditions for design of the double mode filter are described, that is, (1) one condition (L_0=L'_0) for the symmetrical attenuation characteristic of double mode fiiter, (2) The other condition for the minimum capacitance ratio which brings about a broad band filter.　The results of this paper are useful for the design of the double mode filter.
1972-01-20